Hello. I am trying to make a model but when I UV unwrap the mesh and apply the texture, the plane shows black for the texture (instead of transparency!) 
I made the texture in paintͺnet, perhaps that has something to do with it?
If anyone knows how to resolve this issue, please let me know!
Thanks!
In paint.net you have to erase the white background before you begin unless there’s another way to do it that I haven’t seen yet, then save it as a .png file for the transparency to work.
I’m still not quite sure how to fix this issue. 
Make sure you export the texture seperately as RGBA (RGB with ALPHA).
Then, you can upload the mesh seperately as well.
Now, go into studio, and have two things, a normal meshpart, and a specialmesh (the ones with purple icons).
Now make sure the meshpart and specialmesh are in the same location.
Now what you can do is insert your transparent texture into the special mesh texture and set transparency of mesh to 0.02:
You get special mesh transparent solution #1
https://i.imgur.com/jhfokl6.png
Works but as you can see, its somewhat a tad transparent on the texture as well.
Solution #2:
Take a meshpart and slap a decal of your texture on it and set transparency of mesh to 1:
Works 
And I just completely misinterpreted the entire forum post so heres the ACTUAL solution:
I’ll be using an arm with a transparent texture as an example:
As you’ll see, the dark parts indicate the transparent areas, of course to fix this you’ll:
Go to texture section, scroll down, and find Blend Mode and Shadow Mode.
Change the top one to alpha clip:
If it still doesn’t work, go to shading, and put on your alpha node into transparency:
Success 
GIF | Gfycat
